This bag has a recessed zipper closure, an oval base and adjustable strap with lobster clips. The method to make this recessed zipper closure is the easiest I've ever done. I learned to make this bag from the video below and just guessed what the dimensions were. I made my base into an oval shape rather than her more rectangular base.

After making these two bags, I used the same method to create a larger messenger style bag by increasing the dimensions and changing the base to a rectangular shape. You can see it here: Bright Pink Bucket Bag